l.\ f JECTLON- -GELATIN MASSES (WAllM). 263 



499. RANVIER'S G-elatin Mass for Impregnation (2Vm'e,p.l23). 



Concentrated solution of gelatin, 2, 3, or 4 parts ; 1 per cent, nitrate of 

 silver solution, 1 part. 



NEUVILLE (Ann. Sci. Nat., xiii, 1901, p. 36) takes a solution of 10 grms. 

 of soaked gelatin in 100 c.c. of 1 per cent, solution of nitrate of silver. 



500. FRIEDENTHAL'S Hardening Mass (Centralb. Phys., xiii, 1899, 

 p. 267). A 10 per cent, solution of gelatin, combined with a colouring 

 mass, and with 1 vol. of 4 per cent, formol, serves for injecting vessels 

 and hardening the tissues at the same time. 



